/* ==========================================================================
   核心变量与主题设置 (极光青主视觉)
   ========================================================================== */
:root {
    --primary: #0d9488;        
    --primary-hover: #0f766e;
    --primary-light: #f0fdfa;  
    --accent: #f97316;         
    --bg-body: #f4f7f9;        
    --bg-sidebar: rgba(255, 255, 255, 0.9); 
    --text-main: #334155;
    --text-dark: #0f172a;
    --text-sub: #64748b;
    --radius-main: 24px;       
    --shadow-soft: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 20px 40px -10px rgba(13, 148, 136, 0.15);
    
    /* 专属高级渐变 */
    --gold-grad: linear-gradient(135deg, #fcd34d 0%, #f59e0b 100%);
    --cyan-grad: linear-gradient(135deg, #2dd4bf 0%, #0f766e 100%);
}

/* ==========================================================================
   全局基础重置与滚动条
   ========================================================================== */
html { scroll-behavior: smooth; }
* { margin: 0; padding: 0; box-sizing: border-box; outline: none; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 10px; border: 2px solid var(--bg-body); }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

body {
    font-family: 'Inter', "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    font-size: 14px; line-height: 1.6; letter-spacing: 0.02em;
    background-image: radial-gradient(#cbd5e1 1px, transparent 1px);
    background-size: 32px 32px; position: relative; overflow-x: hidden;
}

/* 页面高阶混色环境背景光 */
body::before, body::after {
    content: ''; position: fixed; filter: blur(150px); z-index: -1; 
    opacity: 0.5; border-radius: 50%; pointer-events: none;
}
body::before { top: -10%; left: -10%; width: 60vw; height: 60vw; background: radial-gradient(circle, #99f6e4, transparent 70%); }
body::after { bottom: -10%; right: -10%; width: 50vw; height: 50vw; background: radial-gradient(circle, #bae6fd, transparent 70%); }

ul, li { list-style: none; }
a { text-decoration: none; color: inherit; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); cursor: pointer;}
img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* 页面载入流式骨架动画 */
@keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.animate-up { animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards; opacity: 0; }
.delay-1 { animation-delay: 0.1s; } 
.delay-2 { animation-delay: 0.2s; } 
.delay-3 { animation-delay: 0.3s; } 
.delay-4 { animation-delay: 0.4s; }

/* ==========================================================================
   左侧悬浮固定导航栏
   ========================================================================== */
.g-sidenav {
    position: fixed; left: 24px; top: 24px; bottom: 24px; width: 270px; 
    background: var(--bg-sidebar); border-radius: var(--radius-main); z-index: 1000; display: flex; flex-direction: column;
    box-shadow: 0 20px 40px -10px rgba(0,0,0,0.04); border: 1px solid rgba(255,255,255,1); 
    backdrop-filter: blur(24px); overflow: hidden;
}
.brand-area { 
    height: 96px; display: flex; align-items: center; padding: 0 24px; 
    border-bottom: 1px dashed rgba(0,0,0,0.06); margin-bottom: 12px; position: relative;
}
.logo-icon {
    width: 44px; height: 44px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    border-radius: 14px; display: flex; align-items: center; justify-content: center;
    margin-right: 14px; color: #fff; font-size: 20px; box-shadow: 0 8px 16px rgba(13, 148, 136, 0.25); flex-shrink: 0;
}
.logo-cn { font-size: 22px; font-weight: 900; letter-spacing: 2px; background: linear-gradient(to right, #0f172a, var(--primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.nav-list { padding: 0 16px 20px; flex: 1; overflow-y: auto; scrollbar-width: none; }
.nav-list::-webkit-scrollbar { display: none; }
.nav-title { font-size: 12px; font-weight: 800; color: #94a3b8; padding: 0 12px; margin: 24px 0 12px 0; text-transform: uppercase; letter-spacing: 2px; display: flex; align-items: center; }
.nav-title::after { content: ''; flex: 1; height: 1px; background: linear-gradient(90deg, rgba(0,0,0,0.05), transparent); margin-left: 12px; }
.nav-list li { margin-bottom: 8px; }
.nav-list li a { display: flex; align-items: center; padding: 12px 14px; color: #475569; border-radius: 16px; font-weight: 600; font-size: 15px; letter-spacing: 0.05em; transition: all 0.3s; position: relative; }
.nav-list li a i { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; margin-right: 14px; font-size: 16px; border-radius: 12px; background: rgba(0,0,0,0.03); color: #64748b; transition: all 0.3s; }

.nav-list li.active a { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%); color: #fff; box-shadow: 0 8px 20px -6px rgba(13, 148, 136, 0.5); }
.nav-list li.active a i { background: rgba(255,255,255,0.25); color: #fff; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.nav-list li:not(.active) a:hover { background: rgba(13, 148, 136, 0.06); color: var(--primary-hover); transform: translateX(6px); }
.nav-list li:not(.active) a:hover i { background: #fff; color: var(--primary); box-shadow: 0 4px 12px rgba(13, 148, 136, 0.12); transform: scale(1.08) rotate(3deg); }

/* ==========================================================================
   二级联动悬浮子菜单面板
   ========================================================================== */
.nav-submenu {
    position: fixed; background: rgba(255, 255, 255, 0.96); border: 1px solid rgba(255, 255, 255, 1);
    box-shadow: 0 15px 40px -5px rgba(13, 148, 136, 0.12); backdrop-filter: blur(24px); border-radius: 20px;
    padding: 24px; z-index: 1001; width: 440px; opacity: 0; visibility: hidden; transform: translateX(-15px);
    transition: all 0.3s; pointer-events: none; max-height: 85vh; overflow-y: auto;
}
.nav-submenu.show { opacity: 1; visibility: visible; transform: translateX(0); pointer-events: auto; }
#submenu-mobile { width: 620px; }
#submenu-mobile .submenu-grid { grid-template-columns: repeat(3, 1fr); }

.submenu-title { font-size: 16px; font-weight: 800; color: var(--text-dark); margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px dashed rgba(0,0,0,0.06); display: flex; align-items: center; gap: 10px; }
.submenu-title i { color: var(--primary); font-size: 18px; }
.submenu-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 16px; }
.submenu-grid a { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 12px; color: var(--text-main); font-size: 13px; font-weight: 700; background: rgba(0,0,0,0.02); border: 1px solid transparent; transition: 0.3s;}
.submenu-grid a i { color: var(--text-sub); width: 18px; text-align: center; transition: 0.3s; }
.submenu-grid a:hover { background: var(--primary-light); color: var(--primary-hover); transform: translateX(4px); border-color: rgba(13, 148, 136, 0.1);}
.submenu-grid a:hover i { color: var(--primary); transform: scale(1.1); }

/* 主区域包装层 */
.main-container { margin-left: 320px; padding: 30px 40px 60px 10px; max-width: 1600px; margin-right: auto; overflow-x: hidden; }

/* ==========================================================================
   顶部 Header 与高级搜索组件
   ========================================================================== */
.top-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 30px; position: relative; z-index: 1000; }
.page-title-banner { font-size: 24px; font-weight: 900; color: var(--text-dark); display: flex; align-items: center; gap: 14px; letter-spacing: 1px;}
.page-title-banner i { color: var(--primary); background: var(--primary-light); width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; border-radius: 14px; font-size: 20px;}

.search-wrapper { position: relative; flex: 1; max-width: 580px; display: flex; align-items: center; margin-left: auto;}
.search-input {
    width: 100%; height: 50px; padding: 0 100px 0 24px; border-radius: 25px;
    border: 1px solid rgba(255, 255, 255, 1); background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(20px); box-shadow: var(--shadow-soft);
    color: var(--text-dark); font-size: 14px; font-weight: 600; transition: all 0.4s ease;
}
.search-input::placeholder { color: #94a3b8; font-weight: 500; }
.search-input:focus {
    background: #ffffff; border-color: var(--primary);
    box-shadow: 0 15px 35px -10px rgba(13, 148, 136, 0.25), 0 0 0 4px rgba(13, 148, 136, 0.1);
}
.search-btn {
    position: absolute; right: 5px; top: 5px; bottom: 5px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: #fff; border-radius: 20px; padding: 0 24px; display: flex; align-items: center; justify-content: center;
    font-size: 13px; font-weight: 800; cursor: pointer; transition: all 0.3s ease; letter-spacing: 1px;
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

/* 热搜下拉面板 */
.search-dropdown {
    position: absolute; top: calc(100% + 14px); left: 0; width: 100%;
    background: rgba(255, 255, 255, 0.98); border: 1px solid rgba(255, 255, 255, 1);
    box-shadow: 0 25px 50px -10px rgba(13, 148, 136, 0.15); backdrop-filter: blur(24px);
    border-radius: 20px; padding: 24px; z-index: 1001; opacity: 0; visibility: hidden;
    transform: translateY(-10px); transition: all 0.3s; pointer-events: none;
    max-height: 480px; overflow-y: auto;
}
.search-dropdown.show { opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto; }

.sd-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px dashed rgba(0,0,0,0.06); position: sticky; top: -24px; background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); z-index: 10; padding-top: 24px; margin-top: -24px; }
.sd-title { font-size: 16px; font-weight: 800; color: var(--text-dark); display: flex; align-items: center; gap: 8px; }
.sd-title i { color: #ef4444; font-size: 18px; } 
.sd-header-tag { font-size: 12px; color: #94a3b8; font-weight: 600; }

.sd-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; }
.sd-item { display: flex; align-items: center; gap: 12px; font-size: 14px; font-weight: 700; color: var(--text-main); cursor: pointer; padding: 8px 12px; border-radius: 12px; transition: 0.2s; border: 1px solid transparent;}
.sd-item:hover { background: var(--primary-light); color: var(--primary-hover); transform: translateX(4px); border-color: rgba(13,148,136,0.1);}

.sd-idx { font-size: 15px; font-weight: 900; font-style: italic; color: #94a3b8; width: 22px; text-align: center; }
.sd-item:nth-child(1) .sd-idx { color: #ef4444; } 
.sd-item:nth-child(2) .sd-idx { color: #f97316; } 
.sd-item:nth-child(3) .sd-idx { color: #f59e0b; }

.sd-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sd-tag { font-size: 11px; padding: 2px 6px; border-radius: 4px; font-weight: 900; line-height: 1; }
.sd-tag.hot { background: #fee2e2; color: #ef4444; } 
.sd-tag.new { background: #e0f2fe; color: #0284c7; } 
.sd-tag.up { background: #dcfce7; color: #059669; }

/* ==========================================================================
   赛博科技感巨幕区 (Hero Banner)
   ========================================================================== */
.master-hero {
    background: linear-gradient(135deg, #042f2e 0%, #0f172a 60%, #020617 100%);
    border-radius: 28px; padding: 70px 60px; color: #fff; margin-bottom: 40px; 
    box-shadow: 0 40px 80px -20px rgba(13, 148, 136, 0.4), inset 0 0 0 1px rgba(20, 184, 166, 0.2); 
    position: relative; overflow: hidden; display: flex; align-items: center; transition: all 0.5s ease;
}

/* 3D 赛博网格场景动效 */
.hero-grid {
    position: absolute; inset: -50%;
    background-image: linear-gradient(rgba(20, 184, 166, 0.15) 1px, transparent 1px), linear-gradient(90deg, rgba(20, 184, 166, 0.15) 1px, transparent 1px);
    background-size: 80px 80px; 
    transform: perspective(800px) rotateX(60deg) translateY(-50px) translateZ(-200px);
    animation: gridMove 20s linear infinite; pointer-events: none; z-index: 1;
    mask-image: linear-gradient(to top, transparent 0%, black 80%);
    -webkit-mask-image: linear-gradient(to top, transparent 0%, black 80%);
}
@keyframes gridMove { 0% { transform: perspective(800px) rotateX(60deg) translateY(0) translateZ(-200px); } 100% { transform: perspective(800px) rotateX(60deg) translateY(80px) translateZ(-200px); } }

.master-hero::before {
    content: ''; position: absolute; inset: 0;
    background: url('https://images.unsplash.com/photo-1542751371-adc38448a05e?w=1600&fit=crop') center/cover;
    opacity: 0.1; mix-blend-mode: overlay; pointer-events: none; z-index: 1;
}

/* 漂浮装饰图标 */
.hero-float-icon { position: absolute; font-size: 100px; opacity: 0.08; z-index: 2; animation: floatIcon 6s infinite ease-in-out alternate; pointer-events: none; filter: drop-shadow(0 0 20px currentColor);}
.hf-1 { top: 15%; left: 8%; color: #5eead4; transform: rotate(-15deg); } 
.hf-2 { bottom: -10%; right: 10%; color: #fcd34d; font-size: 160px; animation-delay: -2s; transform: rotate(15deg);} 
.hf-3 { top: 15%; right: 20%; color: #93c5fd; font-size: 70px; animation-delay: -4s; transform: rotate(25deg);} 
.hf-4 { bottom: 20%; left: 25%; color: #c084fc; font-size: 80px; animation-delay: -1s; transform: rotate(-20deg);} 
.hf-5 { top: 40%; left: 45%; color: #f97316; font-size: 50px; animation-delay: -3s; transform: rotate(45deg); opacity: 0.05;} 
@keyframes floatIcon { 0% { transform: translateY(0) rotate(-10deg) scale(1); } 100% { transform: translateY(-40px) rotate(10deg) scale(1.05); } }

/* 背景粒子量子霓虹光晕 */
.hero-glow { position: absolute; border-radius: 50%; filter: blur(120px); z-index: 0; pointer-events: none; mix-blend-mode: screen;}
.hero-glow-1 { left: -10%; top: -30%; width: 500px; height: 500px; background: #2dd4bf; opacity: 0.4; animation: pulseGlow 8s infinite alternate; } 
.hero-glow-2 { right: 5%; bottom: -40%; width: 600px; height: 600px; background: #fbbf24; opacity: 0.25; animation: pulseGlow 10s infinite alternate-reverse;} 
@keyframes pulseGlow { 0% { opacity: 0.2; transform: scale(0.9); } 100% { opacity: 0.5; transform: scale(1.1); } }

.master-hero-content { position: relative; z-index: 10; width: 100%; display: flex; flex-direction: column; align-items: center; text-align: center; }
.master-tag { display: inline-flex; align-items: center; gap: 10px; padding: 6px 20px; background: rgba(45, 212, 191, 0.15); backdrop-filter: blur(12px); border-radius: 30px; font-size: 14px; font-weight: 800; letter-spacing: 2px; border: 1px solid rgba(45, 212, 191, 0.4); color: #5eead4; margin-bottom: 24px; box-shadow: 0 0 20px rgba(45, 212, 191, 0.2);}

.dynamic-title-wrap { display: flex; align-items: center; justify-content: center; gap: 20px; margin-bottom: 24px;}
.dynamic-title-wrap i { font-size: 46px; color: #5eead4; filter: drop-shadow(0 0 15px rgba(94, 234, 212, 0.6)); }

.master-hero-content h1 { font-size: 56px; font-weight: 900; letter-spacing: 2px; line-height: 1.2; text-shadow: 0 10px 30px rgba(0,0,0,0.8); }
.master-hero-content p { font-size: 16px; font-weight: 500; color: #ccfbf1; max-width: 900px; line-height: 1.8; text-shadow: 0 2px 4px rgba(0,0,0,0.6); }

.update-info { margin-top: 30px; font-size: 13px; color: #94a3b8; font-weight: 600; display: flex; gap: 20px; align-items: center; }
.update-info span { background: rgba(255,255,255,0.05); padding: 8px 20px; border-radius: 20px; border: 1px solid rgba(255,255,255,0.1); backdrop-filter: blur(10px);}

/* ==========================================================================
   功能模块三级分流快速通道卡片
   ========================================================================== */
.quick-portals { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 50px; }
.portal-card {
    background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 1); border-radius: 20px; padding: 24px;
    display: flex; align-items: center; gap: 20px; transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 10px 30px -10px rgba(0,0,0,0.05); text-decoration: none;
}
.portal-card:hover { transform: translateY(-8px); box-shadow: 0 20px 40px -10px rgba(13, 148, 136, 0.2); border-color: var(--primary); }

.portal-icon {
    width: 64px; height: 64px; background: linear-gradient(135deg, var(--primary-light), #fff);
    color: var(--primary); border-radius: 16px; display: flex; align-items: center; justify-content: center;
    font-size: 28px; flex-shrink: 0; transition: 0.4s; border: 1px solid rgba(13, 148, 136, 0.1);
}
.portal-card:hover .portal-icon { background: linear-gradient(135deg, var(--primary), var(--primary-hover)); color: #fff; transform: scale(1.1) rotate(5deg); }

.portal-text h3 { font-size: 20px; font-weight: 900; color: var(--text-dark); margin-bottom: 6px; }
.portal-card:hover .portal-text h3 { color: var(--primary); }
.portal-text p { font-size: 13px; color: var(--text-sub); font-weight: 600; margin: 0; }

/* 处于激活态的高亮专属定义 */
.portal-card-active { border-color: var(--primary); background: #fff; box-shadow: 0 20px 40px -10px rgba(13, 148, 136, 0.2); }
.portal-icon-active { background: linear-gradient(135deg, var(--primary), var(--primary-hover)); color: #fff; }
.portal-text-active { color: var(--primary) !important; }

/* ==========================================================================
   公共区块控制标题
   ========================================================================== */
.board-section-header { text-align: center; margin-bottom: 30px; }
.bsh-title { display: inline-block; font-size: 28px; font-weight: 900; color: var(--text-dark); letter-spacing: 2px; position: relative;}
.bsh-title::after { content: ''; position: absolute; bottom: -8px; left: 50%; transform: translateX(-50%); width: 40px; height: 4px; background: var(--primary); border-radius: 2px; }
.bsh-star-icon, .bsh-stream-icon { color: var(--primary); font-size: 24px; margin-right: 8px; }

/* ==========================================================================
   王牌重磅新服推荐展示区 (Card Showcase)
   ========================================================================== */
.focus-showcase { display: flex; justify-content: center; align-items: flex-end; gap: 24px; margin-bottom: 60px; padding: 20px 0; }
.focus-card {
    background: rgba(255,255,255,0.95); backdrop-filter: blur(20px);
    border-radius: 24px; padding: 20px; text-align: center; position: relative;
    box-shadow: 0 20px 40px -10px rgba(0,0,0,0.08); border: 1px solid rgba(255,255,255,1);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1); display: flex; flex-direction: column; align-items: center; text-decoration: none;
}
.focus-card:hover { transform: translateY(-12px); }

/* 高阶 C 位卡片规格 */
.focus-card.highlight { width: 380px; height: 440px; z-index: 3; box-shadow: 0 30px 60px -10px rgba(13, 148, 136, 0.25); border: 2px solid var(--primary); margin-bottom: 20px;}
.focus-card.standard { width: 300px; height: 380px; z-index: 2; box-shadow: 0 20px 40px -10px rgba(148, 163, 184, 0.25); border: 1px solid #cbd5e1;}

.top-badge-icon { position: absolute; top: -30px; left: 50%; transform: translateX(-50%); font-size: 36px; z-index: 10; filter: drop-shadow(0 5px 10px rgba(0,0,0,0.2)); }
.highlight .top-badge-icon { color: #f87171; font-size: 48px; top: -40px; animation: floatCrown 3s ease-in-out infinite alternate;}
@keyframes floatCrown { 0% { transform: translate(-50%, 0); } 100% { transform: translate(-50%, -8px); } }
.standard .top-badge-icon { color: #fcd34d; }

/* CLS性能精控：固定容器高宽比例值，防慢图引发排版下坠跳动 */
.focus-img-wrap { width: 100%; height: 55%; aspect-ratio: 4 / 3; border-radius: 16px; overflow: hidden; position: relative; margin-bottom: 20px; box-shadow: inset 0 0 0 1px rgba(0,0,0,0.05);}
.highlight .focus-img-wrap { height: 60%; aspect-ratio: 4 / 3.2; }
.focus-img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
.focus-card:hover .focus-img { transform: scale(1.08); }

.test-date-badge { position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%); background: rgba(0,0,0,0.85); backdrop-filter: blur(8px); padding: 6px 18px; border-radius: 20px; color: #fff; font-weight: 900; font-size: 15px; letter-spacing: 1px; border: 1px solid rgba(255,255,255,0.2); white-space: nowrap; display: flex; align-items: center; gap: 6px;}
.highlight .test-date-badge { background: linear-gradient(135deg, #ef4444, #b91c1c); box-shadow: 0 4px 12px rgba(239,68,68,0.5); border: none;}

.focus-info { width: 100%; display: flex; flex-direction: column; align-items: center;}
.focus-name { font-size: 22px; font-weight: 900; color: var(--text-dark); margin-bottom: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; width: 100%;}
.highlight .focus-name { font-size: 28px; background: var(--cyan-grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent;}

.focus-tags { display: flex; justify-content: center; gap: 8px; margin-bottom: 12px; flex-wrap: wrap;}
.focus-tags span { font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 6px; }
.tag-type { color: var(--primary-hover); background: var(--primary-light); border: 1px solid rgba(13,148,136,0.2);}
.tag-status { color: #b45309; background: #fef3c7; border: 1px solid rgba(245,158,11,0.2);}

/* ==========================================================================
   纵向流式纵深时间轴视图 (Timeline Table View)
   ========================================================================== */
.main-timeline-section { margin-top: 20px; }
.timeline-container { position: relative; max-width: 1200px; margin: 0 auto 60px; padding-left: 20px; display: flex; flex-direction: column; gap: 40px;}
.timeline-container::before { content: ''; position: absolute; left: 180px; top: 20px; bottom: 20px; width: 2px; background: linear-gradient(to bottom, rgba(13, 148, 136, 0.4), rgba(13, 148, 136, 0.1)); z-index: 0; }

.tl-link-block { display: block; width: 100%; }
.tl-flex-wrap { display: flex; width: 100%; }

.timeline-date { width: 160px; flex-shrink: 0; text-align: right; padding-right: 40px; padding-top: 15px;}
.t-year { font-size: 16px; color: var(--primary); font-weight: 900; letter-spacing: 1px; margin-bottom: 2px;}
.t-day { font-size: 22px; font-weight: 900; color: var(--text-dark); line-height: 1.2; font-family: 'Inter', sans-serif; margin-bottom: 6px; transition: color 0.3s;}
.t-time { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 13px; font-weight: 800; padding: 4px 12px; border-radius: 6px; }

.timeline-dot { position: absolute; left: 180px; top: 28px; transform: translateX(-50%); width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 4px solid var(--primary); box-shadow: 0 0 0 6px rgba(13, 148, 136, 0.1); z-index: 2; transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);}

.timeline-card { 
    flex: 1; margin-left: 60px; background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(24px); 
    border: 1px solid rgba(255,255,255,1); border-radius: 20px; padding: 24px; 
    display: flex; gap: 24px; align-items: center; box-shadow: 0 10px 30px -10px rgba(0,0,0,0.05); 
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.timeline-item:hover .timeline-dot { background: var(--primary); transform: translateX(-50%) scale(1.4); box-shadow: 0 0 20px rgba(13,148,136,0.5); }
.timeline-item:hover .t-day { color: var(--primary); }
.timeline-item:hover .timeline-card { transform: translateX(10px); box-shadow: 0 25px 50px -15px rgba(13, 148, 136, 0.2); border-color: var(--primary); background: #fff;}
.timeline-item.live .timeline-dot { border-color: #ef4444; box-shadow: 0 0 0 6px rgba(239, 68, 68, 0.1); }

/* CLS性能精控：预留缩略图精确物理占位比率 */
.tc-img-box { width: 220px; height: 110px; aspect-ratio: 2 / 1; border-radius: 14px; overflow: hidden; flex-shrink: 0; box-shadow: 0 8px 20px rgba(0,0,0,0.08); position: relative;}
.tc-img-box img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }

.status-ribbon { position: absolute; top: 8px; left: -25px; background: var(--primary); color: #fff; font-size: 11px; font-weight: 800; padding: 4px 30px; transform: rotate(-45deg); box-shadow: 0 2px 5px rgba(0,0,0,0.2); text-align: center; width: 100px; z-index: 2;}
.status-ribbon.live { background: #ef4444; }
.status-ribbon.upcoming { background: #f59e0b; }

.tc-content { flex: 1; display: flex; flex-direction: column; justify-content: center; min-width: 0; }
.tc-header { display: flex; align-items: center; gap: 16px; margin-bottom: 8px; flex-wrap: wrap;}
.tc-title { font-size: 22px; font-weight: 900; color: var(--text-dark); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.timeline-item:hover .tc-title { color: var(--primary); }

.tc-desc { font-size: 15px; color: var(--text-sub); line-height: 1.6; font-weight: 600; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.tc-label-bold { color: var(--text-main); font-weight: 800; }

.tc-stats { display: flex; align-items: center; gap: 30px; padding-left: 24px; border-left: 1px dashed rgba(0,0,0,0.1); flex-shrink: 0; justify-content: flex-end;}
.stat-group { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.sg-label { font-size: 12px; color: #94a3b8; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; }
.sg-val { font-size: 15px; font-weight: 800; color: var(--text-dark); display: flex; align-items: center; gap: 6px; white-space: nowrap;}

.tc-action { margin-left: 20px;}
.btn-view { padding: 12px 24px; border-radius: 12px; background: var(--primary-light); color: var(--primary); font-weight: 800; font-size: 14px; text-align: center; border: 1px solid rgba(13, 148, 136, 0.15); transition: 0.3s; display: flex; align-items: center; justify-content: center; gap: 8px; width: 110px;}
.timeline-item:hover .btn-view { background: linear-gradient(135deg, var(--primary), var(--primary-hover)); color: #fff; box-shadow: 0 8px 20px rgba(13, 148, 136, 0.3); border-color:transparent;}

.load-more-wrap { text-align: center; margin-top: 20px; }
.btn-load-more { padding: 16px 40px; border-radius: 30px; background: rgba(0,0,0,0.03); border: 1px solid rgba(0,0,0,0.05); color: var(--text-sub); font-size: 15px; font-weight: 800; cursor: pointer; transition: 0.3s; }
.loader-arrow { margin-left: 8px; }

/* ==========================================================================
   页脚部分 (Footer)
   ========================================================================== */
.site-footer {
    background-color: #0f172a; color: #94a3b8; padding: 60px 40px 25px; border-radius: var(--radius-main);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1); border: 1px solid rgba(255,255,255,0.05); position: relative; overflow: hidden; margin-top: 40px;
}
.site-footer::before { content: ''; position: absolute; top:0; left: 0; width: 100%; height: 4px; background: linear-gradient(90deg, var(--primary), #3b82f6); }

.footer-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; margin: 0 auto 40px; max-width: 900px; }
.footer-col h4 { color: #f8fafc; font-size: 16px; font-weight: 900; margin-bottom: 25px; position: relative; letter-spacing: 1px; }
.footer-col h4::after { content: ''; position: absolute; left: 0; bottom: -10px; width: 30px; height: 3px; background: var(--primary); border-radius: 2px; }

.footer-logo { display: flex; align-items: center; gap: 12px; color: #fff; font-size: 24px; font-weight: 900; margin-bottom: 20px; }
.footer-logo i { color: var(--primary); font-size: 30px; text-shadow: 0 0 15px rgba(13, 148, 136, 0.5);}

.footer-desc { line-height: 1.8; font-size: 14px; margin-bottom: 25px; color: #94a3b8; font-weight: 500; }
.footer-links { display: flex; flex-direction: column; gap: 14px; }
.footer-links a { color: #94a3b8; font-size: 14px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.footer-links a::before { content: '›'; color: var(--primary); font-size: 18px; font-weight: bold; opacity: 0; transform: translateX(-5px); transition: 0.3s; }
.footer-links a:hover { color: #fff; } 
.footer-links a:hover::before { opacity: 1; transform: translateX(0); }

.footer-bottom { text-align: center; padding-top: 25px; border-top: 1px solid rgba(255,255,255,0.05); font-size: 13px; font-weight: 500; color: #64748b; }
.footer-bottom span { color: rgba(255,255,255,0.1); margin: 0 10px; }

/* 返回顶部 */
.back-to-top {
    position: fixed; bottom: 40px; right: 40px; width: 52px; height: 52px;
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 22px; box-shadow: 0 10px 25px rgba(13, 148, 136, 0.4);
    cursor: pointer; z-index: 1000; opacity: 0; visibility: hidden;
    transform: translateY(20px); transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }

/* ==========================================================================
   响应式流式布局断点适配
   ========================================================================== */
@media (max-width: 1400px) { 
    .tc-stats { flex-direction: column; gap: 16px; border-left: none; padding-left: 0; align-items: flex-start; margin-top: 10px;}
    .stat-group { align-items: flex-start;}
    .tc-action { margin-left: 0; margin-top: 10px; width: 100%;}
    .btn-view { width: 100%; }
    .focus-showcase { flex-wrap: wrap; }
    .focus-card.highlight { order: -1; width: 100%; max-width: 440px; }
    .quick-portals { grid-template-columns: 1fr; }
}